9980109900 has 144 divisors (see below), whose sum is σ = 32951675680. Its totient is φ = 2589408000.

The previous prime is 9980109859. The next prime is 9980109911. The reversal of 9980109900 is 99010899.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49950 + ... + 149850.

Almost surely, 2^9980109900 is an apocalyptic number.

9980109900 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a pronic number, being equal to 99900×99901.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9980109900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16475837840).

9980109900 is an abundant number, since it is smaller than the sum of its proper divisors (22971565780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9980109900 is a wasteful number, since it uses less digits than its factorization.

9980109900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99961 (or 99948 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 9980109900 is about 99900.4999987488. The cubic root of 9980109900 is about 2153.0053445709.

The spelling of 9980109900 in words is "nine billion, nine hundred eighty million, one hundred nine thousand, nine hundred".